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36    VoIP subscriber gateways 
During the activation of manual mode of key exchange, the following settings will be available: 
 
–  Authentication  algorithm  –  select  an  authentication  algorithm  from  the  list:  HMAC-MD5, 
NMAC-SHA1, HMAC-SHA2-256, HMAC-SHA2-384, HMAC-SHA2-512; 
–  Authentication key – key authentication is assigned in dependence on selected algorithm; 
–  Encryption  algorithm  –  select  an  encryption  algorithm  from  the  list:  DES-CBC,  3DES-CBC, 
Blowfish-CBC, Cast128-CBC; 
–  Encryption key – encryption key is assigned in dependence on selected algorithm; 
–  Security Parameter Index – identifying tag added to IPSec header. It helps to the hub to differ 
two data streams involving different encryption algorithms; 
–  Remote  subnet  start  IP  address  in  cooperation  with  ‘Remote  subnet  address  count’ 
determines  address  list  to  establish  IPSec  tunnel.  Addresses  should  locate  in  subnet 
determined by ‘Remote subnet’ and ’Remote subnet mask’ parameters. 
3.1.2.3 ‘Wi-Fi’ submenu 
The submenu is available for TAU-8.IP-W devices.  
Use the submenu to configure wireless network.  
 
Wi-Fi Configuration: 
—  Enable Wi-Fi – when checked, option of wireless access to the device is enabled; 
Wireless  network  name  (SSID)  is  set  in  the  ‘Network’  menu  (tab  ‘Network  settings’) 
separately for each service. SSID field becomes active if you select the Tagged/Untagged of 
‘Access mode via Wi-Fi’. These settings will be applied to all the configured access points.  
–  Channel number for Wi-Fi – channel number for wireless network operation; 
–  Operating mode – wireless interface operation mode: 
–  802.11b – if all the Wi-Fi clients support standard 802.11b; 
–  802.11bg – if network has Wi-Fi clients with 802.11b and 802.11g support;